empty什么意思中文 What is always filled when it is used and empty when at rest?

What is always filled when it is used and empty when at rest?  

What is always filled when it is used and empty when at rest?

什么东西用的时候是满的，不用的时候是空的？
杯子(cup)

he feels very unhabby when someone when him

你好 很高兴回答你的问题 翻译为：
he feels very unhabby when someone when him
他觉得非常不习惯别人当他
望采纳 谢谢

可以两个when并列用吗 When, when, 主句.

可以。比如when you are old enough, when you are mature enough, i will ...

When I think of you when you do not want me, when you want me when I do not think about you.什么意思

这个句子有语法错误，
When I think of you，you do not want me, and when you want me， I do not think about you

when we talking about 和 when we talk about

第一个是错误的句子,正确的应该是when we are talking about或者是when talking about.
第一个是进行时强调正在发生,后面一个是它的省略.
你问的第二个是现在一般时,说的是一个没有感情色彩的经常发生的,习惯的,永恒的动作

when you e home 和 when you in’home

前者：当你回来的时候
后者；你什么时候回来？美国人的省略语而已，进行时态表示将来。 in’就是ing 再英语电影或者歌曲里比较常见，

when were your born 同义句 when is —— ——

When is your birthday?

when we are young还是when we are younger？

应为When we are young.

no matter when and where i am, when i need you,

无论什么时候，我在哪，当我需要你的时候，希望你能在我身边
不懂可追问，望采纳，谢谢

when i with she 还是 when i with her?

when i with her
with是介词，+宾格
she主格
her宾格